Mechanism for producing merchantable bolts from bolt-blanks.



F. R. SCOFIELD. MECHANISM FOR PRODUCING MERCHANTABLE BOLTS FROM BOLTBLANKS.

APPLICATION FILED DEC. 6. 1915.

Patented May 23, 1916.

5 SHEETSSHEET 1- F. R. SCOFIEL D'. MECHANISM FOR PRODUCING MERCHANTABLEBOLTS FROM BOLT BLANKS.

APPLICATION FILED DEC-6. 1915.

Patented May 23, 1916.

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F. R. SCOIFIELD. MECHANISM FOR PRODUCING MERCHANTABLE sons mom sonBLANKS.

APPLICATION FILED DEC-6.1915|- 1,184,033. Patented May 23, 1916.

5 SHEETSSHEET 3- J F? W F. R. SCOFIELD.

MECHANISM FOR PRODUCING MERCHANTABLE BOLTS FROM BOLT BLANKS. APPLICATIONFILED}DEC.6.1915.

1 184 033. Patented May 23,1916. 5 SHEETS-SHEET 4.

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F. R. SCOFIELD. MECHANISM ron nooucme MERCHANTABLE sons FROM sou BLANKS.

APPLICATION FILED DEC-6. 1915- 1,184,033. Patented May 23,1916.

5 SHEETSSHEET 5- ilk/67d??? Mm JP. 7 W W stares PA FRANK R. SCOFIELD, OFCLEVELAND, OHIO.

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FOR PRODUCING MERCHANTABLE.BOLTS FROM BOLT-BLANKS.

To all whom it may concern Be it known that I, FRANK R. SCOFIELD, acitizen of the United States, residing at Cleveland, in the county ofCuyahoga and State of Ohio, have invented a certain new and, usefulImprovementin Mechanism for Producing Merchantable Bolts from Bolt-Blanks, of which the following is a full, clear, and exact description.

The object of this invention is to cheapen the production ofmecliantable bolts, that is to say, bolts upon each one of which anassociated nut is screwed. The invention is amachine into which boltblanks are placed, and from which these blanks, transformed intothreaded and "pointed bolts, and having nuts screwed onto them, aredischarged. -The machine is so organized that automatically the boltsare released one by one from a bolt chute into the embrace of a boltcarrier by which they are successively presented to the action of a boltpointing tool, a bolt threading tool, and

bolt nutting instrumentalities,in such wise that after the machine is inoperation the bolt pointing, boltthreading and nutting mechanisms aresimultaneously working on three different bolt blanks.

The machine is shown in the accompanying drawings, and is hereinafterdescribed, and the particular novel combinations of parts which themachine contains are defi- -nitely recited in the appended claims.

' In the drawings, Figure 1 is a side elevationof a machine embodyingthe invention; Fig. 2 is aplan view of said machine when the bolt chuteand the nut chute are sectioI ied as'shown. Fig. 3 is a sectional endview in the plane indicated by line 3-3 on Fig. 1. Fig. 4 is a sectionalview of certain parts of the machine in the plane indicated by line 11on Fig. 2; Fig. 5 is a plan view partly sectioned of somemechanism atthe left end of the machine. as shown in Figs. 1 and 2. Fig.6 is a sideview of the bolt chute; Fig. 7 is a vertical transverse sectional viewthereof in the plane of line 77 on Fig. 6'; Fig. 8 is a detached view ofthe shaft which forms. a part of the escapement mechanism of said boltcrute: and Figs. 9 and 10 are respectively transverse sectional views ofthis shaft on the planes indicated by lines 9 and 10 on Fig. 8. Fig. 11is a vertical sectional view of the rear endof the shaft 16 and partscarried thereby: Fig. 12 is a plan 14, would be. necessary.

Specification of Letters Patent. P t t May 23,19 Application filedDecember 6, 1915. Serial No. 65,168. V

view of the rear end of the the parts mounted theron.

In the machine is a rotatable shaft 10. to which a bolt carrier issecured, which carrier will be presently explained. It is sufficient forthe present to say that bolt blanks B are automatically delivered one byone from a bolt chute 12 into the embrace of said carrier; and that saidcarrier conveys them and presents them successi 'ely to a bolt pointingtool 19, a bolt threading tool 20, and to the nutting mechanism whichwill be presently explained. -Parallel with this shaft 10 are two shafts15 and 16. These are mounted in bearings in the frame members 17 and 18in such wise that they may turn and move endwise, and they are placed insuch positions that their axes are equal distances from the axes of theshaft 10.

The bolt pointing tool 19 is fixed to that end of the shaft 15 which isadjacent to the bolt carrier: and this pointing tool may be of anysuitable construction,of which there are many well known to be adaptedfor the purpose. Fixed to the corresponding end of the shaft 16 is thebolt threading tool 20 which likewise may be of any familiar or wellknown construction, of which many guide bar 19 and 'suitable for thepurpose are known.- The plained more in detail later. and for thepresent it will be sufiicient to say that its axis is parallel with theaxis of the shaft 10. The bolt blanks B are put into a bolt chute 12.which is a vertical recess between two parallel plates 13 and 11.that-are fixed to the front side of the machine frame 11. In the opposedfacesv of these plates are the grooves 13 andl-l which grooves togetherform guideways in which the heads 6 of said bolts will move. If themachine were organized to operate on bolt blanks of uniform length. onlyone pair of the grooves 13,

is shown, however, there are several pairs of said grooves in the plates13, 1 4,'a'nd whether the heads' I of the I bolt blanks in the boltchute are caused to move" in one or another pair of these groovesdepends upon the length of the 5 bolt blanks.

- The lowest bolt in the bolt chute will. 06-

cupy amsubstantially horizontal position with its axis.parallel with theaxis'of the in Fig. 6. .Thi's pile of bolts-is prevented from droppingout of the lower'end of the;

bolt chutebyme'ans of escapement necha- 15.

. includesa rock shaft 36 The construction of this rock shaft willappear clearly from A crescent-shapedlongitudie f is formed in saidshaft; and

'20 other deeper grooves 36" Figs. 8 and 9Q nal groove 36 adjacent theseveral grooves 13. the bolt chute.

port the lowest bolt in '-'saidchute. however; this rock shaft is rockedthrough an arc of approximately- 90 in the direction of the arrow shown'in 'Figl-7,z the lowermost bolt blank will drop, the shank:

thereof entering the crescent-shaped recess 1 36". When now the rockshaft'is rockedfin the reverse. direction back to its normal posi- Ltion this bolt will be carried down, and-re leased;and= allowed to dropfromathe lower Q end fit the boltchute andenter the embrace of the boltcarrier. This bolt' carriercon- I "sistsojf two disks 21, 22, which arefixedfltd the shaft '10 in suitable positions relative to;

, the threading and ointing tools and to each other 'by meanso-;set'screws-23. Thead-j 'justability of these'disks and-particularly ofthe disk 21' which is'farthest from the' 4 bolt pointing; and threadingtools,- is to enable the machine to operate .on boltsjof 1 "differentlengths. These *disks have respecv tively fixed to them' a plurality ofradially extending and equally spaced arms 21!; 22"; and,all of thesearms have in their outerends the approximately semi-circular bolt'sockets-21",'22 .Thesearms arefixed to. the "disks in such positionthat when a bolt rests in a pair of sockets'21", 22 tfthis-bolt willbe'pa'rallel' with the shaft 19.

justable carriage 24. It is supported on the frame work '11 of themachine and is movable horizontally toward and from the bolt Ipointing-and threading toolsi. fThe Wrench 30 before referred to, isrotatably mounted in bearings upon'this carriage. The front of thecarriage 24 has a-plurality of longslots 24 through which pass. thebolts 24 by which the carriage is fixed to the frame ;may

nism which in the particular form shown" surface 1 of f this *wa'l are.cut in said shaft and l t iofi 1%" Normally "this: rock shaft lies inthe-position, such as shown in Fig.1, f where it extends partlyacross-the lower end 2-5 of-the bolt chute so as to intercept d' np wrmttttbl 'Matteo-1 A The" wrench-30 'a'slstateil is m ounted in bearingsupon the sliding carriage-z 4 24;:R A f a and sup-'- "pulley 31 isfixedto it' so'thatjitjmay be ro When,

-.fall into it an. adjacent bolt B' it will carry' the nut-115.. withit, and the hole'inthe nutfwill tak'ei over thegfiend;ofthe bola-land.by'pre'ssing.

: gainst the bolt it will pushlthe'bolt endwiSqt 1 the wrenchtwhic'h,since it is in constantrm At the left end of the machinelsan adheadsetthe: bolts are' in" this slot prevents. bolts from turning .upontheirown-axes whlle theyare beingpoi-nt'e'djand threaded. What be called theback wall 25'3of 'thisrecess prevents the bolts from moving endwl se asthey are being th eaded .orpointed: The; .lowerarc' sha-ped wall 25) ofthis-grooveexr} tends t0-a tsititat eh that lwhen' a boltli's' ."droppedfrom 'the"boltchuteg1itf not-only ji likewise" the: head-len'gages withthe curved "If i There-f,is? likewise plte 26.-Whit3lifiS:- "cticaleo'iitinuation'of; the back wall: 6 groove 25, and this ex;

tilted a" be en a ing; t S id Pet y: i This wrenchshafhahowevew is-tubular and i{ "contains. ,as'pring actuated" ejector plunger [32,- thereduced-"end 32*;of which projects centrally out of the socket .30 inthel'end of I zsaidwrel'icmandlthespring 33'acts'toy ield 36 and the'headentering the deeper'recess I.

ingly'holdthe plunger in this"pos'iti on This;

supported by said' carrier willl-have-"itshead in alinement' with thesocket 30 of this wrench. The threaded and pointed op'posite" ends'ofthis'bolt'will at the same tii'ne'be i ali'n'ed with-the; threaded holeof -a nut N slide 40;. This slide liesgdirectly'beneath a nut chute{Llof familiar fornigfwhichis de-j signed tocontain 'a .stack' of nuts.piled one upon another', the lowest nut" resting upon this sta koffnut sso'that the 'lowest'nut'will When theslide is moved toward and causeitshead to enter the socket 30 in a v A gear 27 fixed to the shaft 15 and agear 7 29 fixed to Shaft 16,,t'tt in 'meshwith'a-long 13 gear- 1# a thea e i e 92 4 1,05. which is in recess40 in -the top surface ofl-a'i 31101- the slide. When the'slideis'in' itsfretra'cted posit1on-, the recess40*;will be directly below the machine. A gear 28, which has a tdngueand groove driving connection with the shaft 15.1neshes with agear 53 ona counter shaft 54 which carries a pinion 55 which meshes with a gear 56on a cam drum 5?.

This drum is rotatablv mounted upon the shaft 10. and it carries aplurality of cams whose function is to impart to various parts whichhave heretofore been mentioned their charactertistic movements. On theshaft 16 is a circumferentiallv' grooved collar 311 A forked arm 13engages in .the groove in this collar 31; and this forked arm isfixed toa slide 11. which is mounted upon a fixed 1 bar 15: and this slidecarries a friction roller 46 which is extended into position such thatcams on the cam drum mavengage it and move the slide 41. andconsequently move collar 31 and the shaft 16. A similar collar 37 ismounted on the shaft 15 and it isengaged by an arm 47 fixed to a slide48 mounted on a fixed guide bar 49. and this slide is likewise providedwith a friction rolls-r18 which extends to position such that cams onthe cam drum may engage it and thereby cause themovement of slide 48 andshaft 15.

' Both collars 31 and 37 have yielding connections with their respectiveshafts 16 and 15. In each shaft is a recess 50 in which is a coiledspring 51. A pin 52 fixed to the collar goes through a slot in the shaftand engages with said spring. Therefore when either collar is moved tothe left toward the bolt. this movement is transmitted to theassocia'ted shaft through the spring. Therefore the pointing andthreading tools are in A efl'ectspring-pressed against the work. thatis. the bolts on which they operate.

The nut feeding slide l0 likewise has a collar 40 on it which carries afriction roller +0 extended to position such that cams on the cam drummay engage it. This collar is associated with a spring 10 which isconnected at its ends withthe collar and slide and acts tomove thecollar on theslide up against a stop pin 10 carried by the slide. Aspring' 11 is also connected with this collar and with a fixed part ofthe machine frame. and this acts to retract the slide. In

other words. the-cam on the cam drum will move the collar toward theboltcarri'er and this collar acting througlrthe spring will yieldinglvmove the slide in the direction to carr v the nut into'engagement withthe adjacent bolt. and then move the bolt into the socket of the wrenchThe bolt carrier as above described is moved intermittently step by stepthrough head arcual distances corresponding with the dis-' tahcesbetween the axes of the bolt pointing and bolt threading tools. whichdistance likewise corresponds with the dlstance be- 5 tween the boltthreading tool and the -(lischarge endof the bolt chute, and between thenut threading tool and the axis of the wrench. This movement is producedby means of a ratchet 60 secured to the shaft 10. and associatedmechanism as follows: A disk 61 is rotatably mounted upon the shaftadjacent this ratchet. and it carries a spring pawl 62 for engagementwith the ratchet. A link 63 connects this disk with the vertical arm 61-which is attachedto a rock shaft 65: and this rock shaft has ahorizontal arm 66 adapted to be engaged by a cam 71 carried bv the camdrum 5?. During each revolution of the cam drum, therefore. thismechanism is operated with the result of turning shaft 10. andconsequently the bolt carrier thereon through one of its arcual movementsteps as above described.

Fixed to the same rock shaft 65 is another arm 67 which is connected b va link 68 with an arm 69 fixed to the escapement rock shaft 36.wherefore this escapement will be operated. It will also appear thatthis escapement rock shaft will, be rocked to the position to allow thebolt to drop into the grooves therein. while the bolt carrier is beingmoved. hen the bolt carrier stops. the parts which moved it return totheir normal position. and so also will the escapement rock shaft. 'h'enit does return to its normal position the bolt in its embrace will bedropped as stated.

The various cams on the camdrum do notseem to need any specialdescription beyond this. viz: Thev are so constructed that as soon asthe bolt carrier comes to rest. these cams will cause shaft 15 or 16 tomove endwise. thereby causing the pointing and threading tools to engageand operate upon alined bolts. and causing the nut slide to move in thedirection such as to cause a nut to be applied to a, bolt ;and thenthese partswill be restored to their normal positions.

The'bolt carrier. or rather its shaft 10. is temporarilv locked when itcomes to the position in which it presents the bolts thereon to theaction of the pointing tool. etc. Fixed to the shaft 10 is a ratchet 80.Associated with this is a vertical plunger 81 which is under theinfluence of a spring 8:2

ablebolts from bolt bla'nks. the combination of a rotatable bolt carrieradapted to hold a plurality of bolts-1n positions parr allel with andequidistant'from the axls of the'carrier and at 'equal distances from"one another, means for intermittently'.movmg sald bolt carrier arcualdistances equal to the, arcual distances between the bolts thereon,-arotatable bolt threading tool, and

' a rotatable ,bolt pointing tool, each of which is inounted to move inthe direction of it's 1 axis and in such posltions that the axis or saidtools are alined with two bolts'on'the bolt carrier when the-boltcarrier is at rest,-

a rotatable socket. wrench containing a spring actuated bolt ejectorplunger,- which a.

socket wrench is located in such position that its axis is, alinedwith-a third bolt on the carrier when the carrier is at rest, anutchute,a slide movable beneath said. chute H1 a direction parallel with thesocket wrench and containing a recess into which the lowest nut in saidchute will dropwhen the slide is retracted,vsaid slide. being so locatedthat the axis ofanut in said recess willbe alined with the. axis'of saidsocket'wrench, means 1 for delivering bolt blanks one byone into theembraceof said bolt carrier,- a plate containingfan are shaped groovelocated to receivethe heads,of bolts which are supit portedfvupable'bol-ts bolt blanks, I tion of; a rotatable bolt threading tool.arotatablebolt' pointing said bolt carrier, means for moving said boltpointing tool, and bolt threading 'tool, and nut slide towardltheli-boltcarrier. ,2. In imachine for'producing merchantthe combinayielding tool,each of which is mounted to move in the direction of its axis, a socketwrench, and a nut slide oping a plurality arms having bolt holdingrecesses 1n turning said carrier'step posed thereto and adapted to holda nut in such position that the axis thereof'is almed with 'theaxis ofsaid socket wrench, and a bolt carrier adapted to hold a plurality ofbolts and to present them-' successively to i the action of the boltpointing tool, the bolt threading. "tool, and the socket wrench, saidbolt carrier comprising a shaft andtwo disks fixed thereto, each ofsaid; disks carry- "of equally spaced vradial their outer ends, meansfor aht'omatically delivering bolt blanks into the recesses of saidradial arms, means for automatically feeding nuts into the I'CCBSS'IIIsaid slide, meansfor by step .to bring the bolts thereon successivelyinto almement with the pointing. threading, and nuttinginstrumentalities, and means for yieldinglv moving said pointing andthreading 1 tools toward and into engagement with bolts wrench.

on said carrier. and for vieldingly moving said nut holding slide towardthe socket a machmefor producing merchantof a rotatable boltthreading"tool, rotatable bolt pointing tool mounted to move in thedirection of its ja'x s,

the axis of'said socket wrench, and a boltcarrler adapted to hold aplurality ofbolts threading tool. and the socket wrench said boltcarrier coniprislng a shaft and two. dlsks fixed thereto, each of saiddisks carryand to present theni successivelv 'to the action of the boltpointmg tool, the bolt, a

ing a plurality of equally.,, spaced radial armshaving bolt holdingrecesses'in their outer ends, a bolt chute comprlsmg two separatedplates n the opposedfaces of which 1s a bolt headichannelfan escapem'entmechanism for said bolt chute comprising a rock shaft having aperipheral groove adapted to rece ve a part of a, bolt shank. and adeeper groove adapted-to'l'eceive the head of a bolt, and means forrocking saidrock shaft periodicallyr from and back to its normallposition.

i 4. In a machine for producing merchantable bolts from bolt blanks. thecombination of a rotatable bolt threading tool, a rotatable boltpointing tool each of which is axis thereof is alined with the axis ofsaid socket wrench. and a bolt carrier adapted to hold a pluralitv ofbolts and to present them-successively to the action of the boltpointing 'tool, the bolt threading; tool, and the socket wrench, saidbolt carrier comprising a shaft. two "disks "fix ed thereto. means foradjusting. one of said disks lengthwlseof'the shaft,each of saiddiskscarrving a pluralitv of equally spaced-radial arms having boltholding reprisinga plurality of separated plates in the opposed faces ofwhich are a' plurality of bolt head channels, means for releasing boltsone by one from said Clllllit.'il carriage adjustable toward and f-rou'ithe bolt thread in}; and pointing face opposed to'them an arc-shapedgroove 7 for the reception of the heads of bolts supported on saidboltcarrier.

\Vitnesses:

' E. L. Tnnnsrox. 7

A. J. HUDSON.

mounted "to move in the direction of its axis, a socket wrench, and anutslide opposed thereto and adapted to hold a nut in such position-thatthe cesses in their outer "ends. a bolt chute com-.

tools and having hr its l H 11: Irr testimony whereof. I hereunto affixmy signature in the presence of two wltnesses.-

' FRANKR-SCOFIELD, I r

